New Interchange 1 SB (2nd edition)

is a four-level, multi-skills English series for adult and young-adult learners. Each unit includes relevant content, additional grammar practice, and more opportunities to develop speaking and listening skills.

Focusing on both accuracy and fluency, the multi-skills syllabus integrates themes, grammar, functions, vocabulary, and pronunciation. The series incorporates suggestions from teachers and students all over the world.

Geometry of Four Dimensions

The Foundations Of Four Dimensional Geometry; Points And Lines; Triangles; Planes; Convex Polygons; Tetrahedrons; Hyperplanes; Convex Pyramids And Pentahedroids; Space Of Four Dimensions; Hyperpyramids And Hypercones; Perpendicularity And Simple Angles; Angles Of Two Planes And Angles Of Higher Order; Symmetry, Order, And Motion; Euclidian Geometry; Figures With Parallel Elements; Measurement Of Volume And Hypervolume In Hyperspace; The Regular Polyhedroids; The Polyhedroid Formula;

http://englishtips.org/1150848997-geometry-of-four-dimensions.html

The Psychologist's Book of Personality Tests: Twenty-Four Revealing Tests to Identify and Overcome Your Personal Barriers to a Better LifeDo you long for happiness? Do you worry too much? Are you content in your romantic relationships? Do you wish you felt better about yourself?

Now you can discover exactly what’s stopping you from living the life you long to lead–and what you can do about it. Based on the latest research, this inspiring guide by renowned author and psychologist Dr. Louis Janda presents twenty-four psychological tests that will help you identify the barriers standing between you and a more fulfilling personal and professional life–and figure out how you can overcome them. 

http://englishtips.org/1150798863-the-psychologists-book-of-personality.html

Geometry of Four Dimensions

The Foundations Of Four Dimensional Geometry; Points And Lines; Triangles; Planes; Convex Polygons; Tetrahedrons; Hyperplanes; Convex Pyramids And Pentahedroids; Space Of Four Dimensions; Hyperpyramids And Hypercones; Perpendicularity And Simple Angles; Angles Of Two Planes And Angles Of Higher Order; Symmetry, Order, And Motion; Euclidian Geometry; Figures With Parallel Elements; Measurement Of Volume And Hypervolume In Hyperspace; The Regular Polyhedroids; The Polyhedroid Formula;

http://englishtips.org/1150848997-geometry-of-four-dimensions.html

Laser B1+ Student’s Book

Description: Level: B1+ / Intermediate to Upper-Intermediate. Designed to bridge the gap between B1 (Intermediate) and B2 (FCE) level English. Provides comprehensive coverage of the grammar and vocabulary required at this level as well as extensive language skills practice.
KEY FEATURES
Vocabulary Builder sections, focusing on topic-based lexis, collocations, patterns, word formation, phrasal verbs and metaphorical use of language. Comprehensive practice in revised FCE exam-orientated task types. Revision sections after every two units. Writer’s database, Word pattern database, Phrasal verb database, Speaking database, and Grammar database, for students’ reference.